1. tie one end of string to hole in crank, guide opposite end under bar and through grommet.

 

2. Line up ends of ladder as shown, holding string taut, tie to grommet in extension ladder.

 

3. Hold string taut and turn crank until extension ladder passes under bar as shown. tie loose end of string to hole in crank.

 

4. for super long extensions of ladder attach ladder section with addapter end as shown.